CVE-2021-3196

An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.

CVSS v3.0 8.8 HIGH
CVSS v2.0 6.5 MEDIUM

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.hitachi.com/hirt/security/index.html	Vendor Advisory
https://www.hitachi-id.com/cve-2021-3196-attackers-can-impersonate-another-user	Vendor Advisory
https://www.hitachi.com/hirt/hitachi-sec/2021/601.html	Exploit Vendor Advisory

Advertisement

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:hitachi:id_bravura_security_fabric::::::::
	cpe:2.3:a:hitachi:id_bravura_security_fabric::::::::
	cpe:2.3:a:hitachi:id_bravura_security_fabric:12.1.0:::::::*

Information

Published : 2021-06-09 08:15

Updated : 2021-06-24 09:34

NVD link : CVE-2021-3196

Mitre link : CVE-2021-3196

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

Advertisement

Products Affected

hitachi

id_bravura_security_fabric

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www.hitachi.com/hirt/security/index.html", "name": "https://www.hitachi.com/hirt/security/index.html", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "https://www.hitachi-id.com/cve-2021-3196-attackers-can-impersonate-another-user", "name": "https://www.hitachi-id.com/cve-2021-3196-attackers-can-impersonate-another-user", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.hitachi.com/hirt/hitachi-sec/2021/601.html", "name": "https://www.hitachi.com/hirt/hitachi-sec/2021/601.html", "tags": ["Exploit", "Vendor Advisory"], "refsource": "CONFIRM"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-347"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-3196", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}}, "publishedDate": "2021-06-09T15:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:hitachi:id_bravura_security_fabric:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "11.1.3", "versionStartIncluding": "11.0.0"}, {"cpe23Uri": "cpe:2.3:a:hitachi:id_bravura_security_fabric:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "12.0.2", "versionStartIncluding": "12.0.0"}, {"cpe23Uri": "cpe:2.3:a:hitachi:id_bravura_security_fabric:12.1.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-06-24T16:34Z"}